Revert "nosni"

https://github.com/XTLS/Xray-core/pull/3214#issuecomment-2078502477

transport/internet/reality/reality.go

@@ -116,8 +116,6 @@ func UClient(c net.Conn, config *Config, ctx context.Context, dest net.Destinati
 	}
 	if utlsConfig.ServerName == "" {
 		utlsConfig.ServerName = dest.Address.String()
-	} else if strings.ToLower(utlsConfig.ServerName) == "nosni" { // If ServerName is set to "nosni", we set it empty.
-		utlsConfig.ServerName = ""
 	}
 	uConn.ServerName = utlsConfig.ServerName
 	fingerprint := tls.GetFingerprint(config.Fingerprint)

transport/internet/tls/config.go

@@ -325,11 +325,6 @@ func (c *Config) GetTLSConfig(opts ...Option) *tls.Config {
 		config.ServerName = sn
 	}
 
-	// If ServerName is set to "nosni", we set it empty.
-	if strings.ToLower(c.parseServerName()) == "nosni" {
-		config.ServerName = ""
-	}
-
 	if len(config.NextProtos) == 0 {
 		config.NextProtos = []string{"h2", "http/1.1"}
 	}